// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once


#include <cantor/parser/ast/base.h>
#include <cantor/parser/ast/expr.h>
#include <cantor/parser/ast/clause.h>

namespace cantor::parser {

    struct FuncWhenClause : public DispatchExpr {

        static constexpr const char* func_name = "case_when";

        FuncWhenClause() : DispatchExpr(pb::ast::ENT_FUNC_WHEN_CLAUSE, pb::ast::ENC_FUNC) {
            fn_name = func_name;
        }

        nlohmann::ordered_json to_json() const override;

        bool is_complex_node_func() const {
            if (when_clause && when_clause->is_complex_node()) {
                return true;
            }
            return false;
        }

        String fn_name;
        WhenClause *when_clause{nullptr};
    };

    struct FuncCaseWhenClause : public DispatchExpr {
        static constexpr const char* func_name = "case_expr_when";

        FuncCaseWhenClause() : DispatchExpr(pb::ast::ENT_FUNC_CASE_WHEN_CLAUSE, pb::ast::ENC_FUNC) {
            fn_name = func_name;
        }

        nlohmann::ordered_json to_json() const override;

        bool is_complex_node_func() const {
            if (when_clause && when_clause->is_complex_node()) {
                return true;
            }
            return false;
        }

        String fn_name;
        WhenClause *when_clause{nullptr};
    };
}  // namespace cantor::parser
